Icon stencils
Free
Music
A series of musical notes.
Free
Arrow 1
Miscellaneous arrow shapes. (Part 1)
Free
Arrow 2
Miscellaneous arrow shapes. (Part 2)
Free
Arrow 3
Miscellaneous arrow shapes. (Part 3)
Free
Arrow 4
Miscellaneous arrow shapes. (Part 4)
Free
Feed icons
Here's a set of standard feed icons for RSS and Atom feeds. Icons come in 10x10, 12x12, 16x16, 24x24, 32x32, and 48x48 sizes, and work well on light or dark backgrounds. For more sizes and info, check out the Feed Icons website.
Free
Talk Bubbles
A stencil set for talk/conversation bubbles.
Free
Regular polygons
Regular polygons, all set and ready to go, from 3 to 15 sides.
Free
Automata
Symbols for diagrams of finite state machines.